j-system21.com - robtex.com

j-system21.com

DNSSEC⚠️ Not signed
A153.122.205.50🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K.
NSj-system21.com ⭐
A153.122.205.50🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K.
NSdnss10.so-net.ne.jp
A210.139.255.1🇯🇵 So-net210.139.128.0/17 Sony Network Communications Inc.
PTRdnss10.so-net.ne.jp
NSdnss11.so-net.ne.jp
A210.139.255.17🇯🇵 So-net210.139.128.0/17 Sony Network Communications Inc.
PTRdnss11.so-net.ne.jp
MXmx.j-system21.com ⭐
A153.122.206.94🇯🇵 AS131921153.122.192.0/20 GMO CLOUD K.K. GMO GlobalSign Holdings K.K.
TXTv=spf1 include:_spf.shared-server.net +mx ~all
SOAj-system21.comhostmaster@j-system21.com serial=2602171610

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1778811906

NS for

j-system21.com

Previously MX for

j-system21.com

Same first word

j-system21.com

DNS History

8 records (5 active, 3 former)

20162017201820192020202120222023202420252026NSdnss10.so-net.ne.jpdnss11.so-net.ne.jpj-system21.comMXmx.j-system21.comj-system21.comA153.122.205.50124.40.19.186211.13.196.153
●NSdnss10.so-net.ne.jp2015-06-03 → 2026-05-15 · 2 obs
● 2015-06-03 07:00:52
● 2026-05-15 02:53:02
●NSdnss11.so-net.ne.jp2015-06-03 → 2026-05-15 · 2 obs
● 2015-06-03 07:00:52
● 2026-05-15 02:53:02
●NSj-system21.com2015-06-03 → 2026-05-15 · 2 obs
● 2015-06-03 07:00:52
● 2026-05-15 02:53:02
○MXj-system21.com2015-06-03 → 2015-11-15 · 4 obs
● 2015-06-03 07:00:52
● 2015-11-15 17:26:12
○ 2016-02-04 02:23:26
○ 2026-05-15 02:53:02
●MXmx.j-system21.com2016-02-04 → 2026-05-15 · 3 obs
○ 2015-11-15 17:26:12
● 2016-02-04 02:23:26
● 2026-05-15 02:53:02
○A124.40.19.1862015-06-03 → 2015-11-15 · 4 obs
● 2015-06-03 07:00:52
● 2015-11-15 17:26:12
○ 2016-02-04 02:23:26
○ 2026-05-15 02:53:02
●A153.122.205.502026-05-13 → 2026-05-15 · 3 obs
○ 2018-09-09 21:48:42
● 2026-05-13 08:29:10
● 2026-05-15 02:53:02
○A211.13.196.1532016-02-04 → 2018-09-09 · 5 obs
○ 2015-11-15 17:26:12
● 2016-02-04 02:23:26
● 2018-09-09 21:48:42
○ 2026-05-13 08:29:10
○ 2026-05-15 02:53:02

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coml.gtld-servers.net, a.gtld-servers.net, i.gtld-servers.net, d.gtld-servers.net...-
j-system21.comdnss10.so-net.ne.jp, dnss11.so-net.ne.jp-

✅ Authoritative Response

Server:210.139.255.17

NS records: dnss10.so-net.ne.jp, dnss11.so-net.ne.jp

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for j-system21.com (unsigned zone)

⏱️ Timing

Total: 1262ms | Queries: -

📄 Records

TypeCountSample Data
A1153.122.205.50
NS2dnss10.so-net.ne.jp, dnss11.so-net.ne.jp
MX1mx.j-system21.com (pri: 10)
TXT1v=spf1 include:_spf.shared-server.net +m
SOA1j-system21.com hostmaster.j-system21.com

Analysis

Name Server Role

j-system21.com serves as a name server for j-system21.com.

dnss10.so-net.ne.jp and dnss11.so-net.ne.jp are commonly used as name servers along with j-system21.com.

IP Addresses

j-system21.com points to IP number: 153.122.205.50.

Other host names such as daioukai.jp, ohisamabunko.jp, mg-lotus.com, arkis.jp and sk-international.co.jp share IPs with j-system21.com.

Name Servers

j-system21.com is delegated to three name servers: j-system21.com, dnss10.so-net.ne.jp and dnss11.so-net.ne.jp.

j-system21.com at least partially shares name servers with other domains, for instance tanikoshi.com, hi-j.net, hakusanmegane.com, infemin.com and logos-j.jp.

Host names with a single IP:

j-system21.com points to: 153.122.205.50.

dnss10.so-net.ne.jp points to: 210.139.255.1.

dnss11.so-net.ne.jp points to: 210.139.255.17.

Mail Servers

j-system21.com is handled by a single mail server, mx.j-system21.com.

mx.j-system21.com points to a single IP: 153.122.206.94.